linux-kernel - Re: Nokia N900: musb is in wrong state after boot

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Message-ID: <20160610173712.GC28283@uda0271908>
Date:	Fri, 10 Jun 2016 12:37:12 -0500
From:	Bin Liu <b-liu@...com>
To:	joerg Reisenweber <joerg@...nmoko.org>
CC:	Pali Rohár <pali.rohar@...il.com>,
	Tony Lindgren <tony@...mide.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	Sebastian Reichel <sre@...nel.org>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pavel Machek <pavel@....cz>, Nishanth Menon <nm@...com>,
	Felipe Balbi <balbi@...nel.org>
Subject: Re: Nokia N900: musb is in wrong state after boot

Hi,

On Fri, Jun 10, 2016 at 06:15:26PM +0200, joerg Reisenweber wrote:
> On Fri 10 June 2016 10:59:40 Bin Liu wrote:
> > The musb ug says the testmde is not used in normal operation, so my
> > opinion is force_host should not be used for hacking n900 host mode if
> > this is for real product development or support.
> 
> You're aware N900 OS aka maemo is a) FOSS, and b) EOL at least from Nokia's 
> POV? So there's neither "product development" nor any _'official'_ support 
> involved.
> And c) we (community) already _did_ use it since it was the only chance to 
> make hostmode sort of work for N900, it's not like we could redesign N900 
> hardware to support regular hostmode, we need to work with what RL gave us. 

Well, misunderstanding does happening as Nishanth warned me offline :(

> It evades me why you discourage resp reject this established solution. 

Not sure how you concluded I reject this. Instead I am taking patches.
The only thing I did was warning that if you use force_host testmode in
normal operation in your 'products', you would get liability problem.

> Just Nokia not supporting hostmode evidently doesn't mean we can't get 
> anything done, and I don't see why we should refrain from doing so.

Regards,
-Bin.